Welcome aboard, Jim!
Unfortunately, the oil coolers on the classic Monsters are completely different from the 1100 version and so Mr Gazza's protector won't fit your bike.
You can however fit the grille from the 696, which is part no. 46013431A and no. 15 on the diagram.
For some reason, the 696 came with a guard while neither the 796 not 1100 has one. The oil cooler surround is the same on all three models so the grille will fit your bike with no problems (you may have to use some dabs of epoxy to secure the grille to the surround).